- Category
- Forb / Wildflower
- Sun
- Full to Partial
- Soil moisture
- Medium-Wet to Medium-Dry
- Bloom time
- May–Jun
- Bloom color
- White
- Notes
- Monocarpic
About American Columbo
American Columbo is a rare and mysterious giant of the woodland edge, offering a truly unique life cycle for the patient gardener. As a monocarpic perennial, it spends several years (sometimes up to 15 or more) as a large, low-growing basal rosette of smooth green leaves before finally sending up a spectacular flower stalk that can reach 3 to 8 feet in height. The bloom occurs in May and June, featuring pale green to white flowers adorned with intricate purple spots. Native to the central and eastern United States, it is typically found in calcareous grasslands, open savannas, and dry-mesic woods. This striking plant supports various native bees and flies, adding significant ecological value to its habitat. It prefers full to partial sun and medium-wet to medium-dry soil. Because the plant dies after its one magnificent flowering event, it is a fascinating species to observe over time. Its architectural form and rare status make it a prized addition to any serious native plant collection.
Native range
Native to 17 states:
County range map

Range map courtesy of BONAP (Biota of North America Program).
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